您要查找的是不是：
- That machine works by itself. 那台机器是自动工作的。
- This is a machine that works by itself. 这是一部自动化的机器。
- The machine works by itself. 机器自行运转。
- This machine is efficiency than that machine work. 这台机器比那台机器工作效率更高。
- This kind of machine works by electricity. 这种机器靠电运转。
- This machine works by electricity. 这台机器是电动的。
- Any engineer worth his salt should know how that machine works. 任何一位称职的工程师都应该知道那台机器是如何操作的。
- Any engineer worth his salt shall know how that machine work. 任何一位称职的工程师都应该知道那台机器是如何操作的。
- The machine will start by itself in a few seconds. 机器在几秒钟後会自动开启。
- We couldn't find any machine that could think by itself. 我们无法找到一台能自行思索的机器。
- The house stood by itself on a hill. 这座房屋独立在小山上。
- That machine has one big failing. 那台机器有个大缺点。
- A vowel can form a syllable by itself. 元音能单独构成音节。
- The concert included works by Mozart et al. 音乐会上演奏莫扎特等人的作品。
- The statue stands by itself in the square. 广场上孤零零地立著这座雕像。
- Please demonstrate how the machine works. 请示范机器的使用方法。
- Her mother's hair-style is in a class by itself. 她母亲的发型称得上是别具一格。
- She sleeps by day and works by night. 她白天睡觉，夜间工作。
- How do you make this machine work? 你是怎么使这机器运转的？
- Some pumps and all vacuum cleaners work by suction. 有些泵和所有真空吸尘器都是借吸力工作的。
